#3178

Find the Child Who Has the Ball After K Seconds

pupil · 365 · lc easy +23 · 62.1% accepted · 180 likes · top 63%

Description

There are n children (0 to n - 1) in a line. Child 0 starts with a ball moving right; each second the ball advances one position, reversing direction at the endpoints. Return the index of the child holding the ball after k seconds.

Code

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